
OWNER’S MANUAL
Thank you for choosing a JL Audio Evolution™ C2 Coaxial Speaker System
for your automotive sound system.
These Evolution™ Speakers have been designed and manufactured to
exacting standards in order to ensure years of musical enjoyment in your
vehicle. For maximum performance, we highly recommend that you have
your new speakers installed by an authorized JL Audio dealer. Your
authorized dealer has the training, expertise and installation equipment
to ensure optimum performance from this product. Should you
decide to install the speakers yourself, please take the time
to read this manual thoroughly so as to familiarize yourself
with its installation requirements and setup procedures.
If you have any questions regarding the instructions in this
manual or any aspect of your amplifier’s operation, please contact your
authorized JL Audio dealer for assistance. If you need further assistance,
please call the JL Audio Technical Support Department
at (954) 443-1100 during business hours.
3.50-inch (90 mm) Coaxial Loudspeakers

2 | JL Audio - C2-350x Owner’s Manual
A
D
E
C
B
Due to ongoing product development, all specifications are subject to change without notice.
Woofer Physical Dimensions
Frame Outer Diameter (A) 3.44 in. / 87.3 mm
Magnet Outer Diameter (B) 2.36 in. / 60.0 mm w/o cover
Frontal Tweeter Protrusion (C) 0.54 in / 13.8 mm
Mounting Hole Diameter (D) 3.19 in. / 81.0 mm
Mounting Depth (E) 1.50 in. / 38.1 mm w/o cover

2 | JL Audio - C2-350x Owner’s Manual
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C2-350x SPECIFICATIONS:
Woofer: Injection-molded, Mica-filled,
Polypropylene Cone, Polyether Foam Surround
0.75 in. Voice Coil on Kapton® Former, Symmetrical Roll Spider
Ferrite Magnet
Tweeter: 0.75 in. (19 mm) Silk Dome, Ferrofluid Cooling /
Damping Neodymium Magnet
Crossover: Natural Roll-Off Low-Pass, 1st Order High-Pass
Filter with Electrolytic Capacitor
Continuous Power Handling: 25 Watts
Recommended Amp Power: 10-40 Watts per channel (RMS)
Efficiency: 83.0 dB @ 1W/1m | 89.0 dB @ 1W/0.5m
Sensitivity: 86.0 dB @ 2.83V/1m
Nominal Impedance: 4 ohm
Frequency Response: 130 Hz - 22 KHz ± 3 dB
Included Components and Parts:
• Two C2-350x 3.5-inch (90mm) Coaxial loudspeakers
• Four #8 x 1 inch (25mm) sheet metal screws
• Four Mounting Clips
• Two 5.2 mm female crimpable connectors
• Two 2.8 mm female crimpable connectors
GETTING STARTED
•Turnofftheaudiosystem.Itisalso
advisabletodisconnectthenegative(–)
terminalofyourvehicle’sbatterywhenever
performinginstallationwork.
•Beforecutting,drillingorinsertinganyscrew,
checkclearancesonbothsidesoftheplanned
mountingsurface.Alsocheckforanypotential
obstacles,suchaswindowtracksandmotors,
wiringharnesses,etc.Checkbothsidesofthe
vehicle,manyvehiclesarenotsymmetrical!
•Alwayswearprotectiveeyewear.
SPEAKER PLACEMENT CONSIDERATIONS
Inmostcases,yourspeakerswillbeplacedinto
factoryspeakerlocations.Ifyouhavesomespeaker
mountingflexibility,keepthefollowinginmind:
Lowermountinglocations,suchasthelowerfront
cornerofadoororakick-panelprovidethegreatest
pathlengthdistancesforthesoundemittedbythe
speakers.Forthisreason,theyaregenerallymore
desirablethanhighermountinglocations.Higher
mountinglocationswillusuallyresultinextreme
near-sidesoundstagebiaswhichcompromisesthe
stereolisteningexperience.

4 | JL Audio - C2-350x Owner’s Manual
Custom Location:Runspeakerwiretothe
desiredmountinglocation.Ifyouarerunning
wiresintoadoor,useexistingfactorywiringboots
wheneverpossible.Ifyouaredrillingnewholes,file
theiredgesandinstallrubbergrommetsintoeach
hole.Then,coverthewireswithaprotectivePVC
sleeveandrunthemthroughthedoorjamb.Make
surethatthewireswillcleardoorhingesandother
structuresinthedoor.Ifyouareunsureaboutany
partofthisprocess,pleasecontactyourJLAUDIO
dealerforinstallationhelp.
WARNING
!!
Double check the clearance for both speakers
before proceeding. Many cars are different from
one side to the other!
Selectanevensurface.Tighteningaspeakeronto
anunevensurfacecandamageit.Usethesupplied
templatetomarkthedesiredmountinglocation.
Markthecenterandtheoutlineofthemounting
holeaswellasthemountingscrewpositions.Before
drillingorcuttingonyourinteriorpanels,usea
utilityknifetocutanyfabric,vinylorleatherfrom
holelocations.Thesematerialscaneasilybesnagged
byadrillorasaw,causingdamagetothepanel
andpossiblebodilyinjury.Drillfour1/8-inch(3
mm)holesforthespeaker’smountingscrewsatthe
positionsyouhavemarked.Alsodrillapilothole
inthecenterofthespeakermountingholeatthis
time.Then,usingasabersaw,makethecircularcut
outforthespeaker.Fileanyroughedges.Insertthe
mountingclipswiththeflatsidetowardsthespeaker
asshowninDiagramA(page5).
Itisabsolutelyvitalthatthespeakerframefitsinto
themountingholecleanly.Thismustbecheckedprior
totighteningthescrews.Donotforcetheframeintoa
holethatistoosmall.Donottightenthespeakeronto
anunevensurface.Thiswilldamageyourspeakers.
Thespeakershouldalsofitsothatairdoesnotleak
aroundthemountingflange.Airleakswillcausea
severedegradationinsoundquality.Sealanyairleaks
withanautomotive-gradesealantmaterial.
Connectthespeakerwires,observingcorrect
polarity,andinstallthespeakerasshowninDiagram
A(page5).Hand-tightenthescrewsevenlytoavoid
bendingthespeakerframe!
SPEAKER INSTALLATION
Thespeakershouldbeinstalledinoneofthe
followingwaysdependingonlocation:
Factory Location:Ifyouwillbeusingthefactory
speakerwires,itmaybenecessarytochangethe
terminations.Thismaybeaccomplishedbyusingan
adaptorplugorsimplybycuttingthefactoryconnector
offandusingthesuppliedcrimpconnectorsto
terminatethespeakerwires.Thelargeconnectorisfor
thepositiveterminalandthesmallconnectorisforthe
negativeterminalofeachC2-350x.
Youmayalsochoosetorunnewspeakerwires...
Runspeakerwiretothedesiredmounting
locations.Ifyouarerunningwiresintoadoor,use
existingfactorywiringbootswheneverpossible.If
youaredrillingnewholes,filetheiredgesandinstall
rubbergrommetsintoeachhole.Wiresshouldthen
becoveredwithaprotective,flexiblePVCsleeveand
thenrunthroughthedoorjamb.Makesurethatthe
wireswillcleardoorhingesandotherstructuresin
thedoor.Ifyouareunsureaboutanypartofthis
process,pleasecontactyourJLAudiodealerfor
installationhelp.
WARNING
!!
Double check the clearance for both speakers
before proceeding. Many cars are different from
one side to the other!
Yournewspeakershavebeendesignedtoinstall,
withoutmodifications,intomostvehiclesthataccept
a3.5-inch(90mm)speaker.Mostfactory3.5-inch
speakersusetwomountingscrewswhichwilllineup
withthemountingholesonyourC2-350xspeakers.
Itisabsolutelyvitalthatthespeakerframe
fitsintothemountingholecleanly.Thismustbe
checkedpriortotighteningthescrews.Donot
forcetheframeintoaholethatistoosmall.Do
nottightenthespeakerontoanunevensurface.
Thiswilldamageyourspeakers.Thespeaker
shouldalsofitsothatairdoesnotleakaround
themountingflange.Airleakswillcauseasevere
degradationinsoundquality.Sealanyairleaks
withanautomotive-gradesealantmaterial.
InstallasshowninDiagramA(page5).Usethe
suppliedmountingclipsunlessthefactoryholes
alreadyfeaturethreadedinserts.Hand-tightenthe
screwsevenlytoavoidbendingthespeakerframe!

4 | JL Audio - C2-350x Owner’s Manual
5
Because3.5-inchspeakersarerarelyusedfor
custommounting,grillesarenotsuppliedwiththe
C2-350xspeakers.Shouldyouneedthem,youwill
needtopurchaseaftermarketgrillesseparately.
Diagram A:
Factory & Custom Location Woofer Installation
WARNING
!!
Hand-tighten the screws evenly in a criss-cross
pattern to avoid bending the speaker frame or
stripping the mounting clips.

6 | JL Audio - C2-350x Owner’s Manual
NOTES

6 | JL Audio - C2-350x Owner’s Manual
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NOTES

LIMITED WARRANTY AUTOMOTIVE SPEAKER SYSTEMS USA
JLAUDIOwarrantsthesespeakers(andcrossovernetworks,whereapplicable)tobefreeofdefectsin
materialsandworkmanshipforaperiodofone (1) year.
Thiswarrantyisnottransferableandappliesonlytotheoriginalpurchaserfromanauthorized
JLAUDIOdealer.Shouldservicebenecessaryunderthiswarrantyforanyreasonduetomanufacturing
defectormalfunction,JLAUDIOwill(atitsdiscretion),repairorreplacethedefectiveproductwithnewor
remanufacturedproductatnocharge.Damagecausedbythefollowingisnotcoveredunderwarranty:accident,
misuse,abuse,productmodificationorneglect,failuretofollowinstallationinstructions,unauthorizedrepair
attempts,misrepresentationsbytheseller.Thiswarrantydoesnotcoverincidentalorconsequentialdamages
anddoesnotcoverthecostofremovingorreinstallingtheunit(s).Cosmeticdamageduetoaccidentornormal
wearandtearisnotcoveredunderwarranty.
Anyapplicableimpliedwarrantiesarelimitedindurationtotheperiodoftheexpresswarrantyasprovided
hereinbeginningwiththedateoftheoriginalpurchaseatretail,andnowarranties,whetherexpressorimplied,
shallapplytothisproductthereafter.Somestatesdonotallowlimitationsonimpliedwarranties,therefore
theseexclusionsmaynotapplytoyou.Thiswarrantygivesyouspecificlegalrights,andyoumayalsohaveother
rightswhichvaryfromstatetostate.
If you need service on your JL AUDIO product:
AllwarrantyreturnsshouldbesenttoJLAUDIOfreightprepaidthroughanauthorizedJLAUDIO
dealerandmustbeaccompaniedbyproofofpurchase(acopyoftheoriginalsalesreceipt.)Direct
returnsfromconsumersornon-authorizeddealerswillberefusedunlessspecificallyauthorizedby
JLAUDIOwithavalidreturnauthorizationnumber.Warrantyexpirationonproductsreturned
withoutproofofpurchasewillbedeterminedfromthemanufacturingdatecode.Coveragemaybe
invalidatedasthisdateisprevioustopurchasedate.Returnonlydefectivecomponents.Ifonespeaker
failsinasystem,returnonlythatspeakercomponent,nottheentiresystem.Non-defectiveitems
receivedwillbereturnedfreight-collect.Customerisresponsibleforshippingchargesandinsurance
insendingtheproducttoJLAUDIO.Freightdamageonreturnsisnotcoveredunderwarranty.
For Service Information in the U.S.A. please call
JL Audio Customer Service: (954) 443-1100
9:00 AM – 5:30 PM (Eastern Time Zone)
JL Audio, Inc
10369 North Commerce Pkwy.
Miramar, FL 33025
International Warranties:
Products purchased outside the United States of America are covered only
by that country’s distributor and not by JL Audio, Inc.
C2-350x-06112008
